// Updates are sent on a regular basis and the caller *must* consume them.
func (er erasureObjects) nsScanner(ctx context.Context, buckets []BucketInfo, wantCycle uint32, updates chan<- dataUsageCache, healScanMode madmin.HealScanMode) error {
	if len(buckets) == 0 {
		return nil
	}

	// Collect disks we can use.
	disks, healing := er.getOnlineDisksWithHealing(false)
	if len(disks) == 0 {

	bucket              string
	object              string
	versionID           string
	versions            []byte
	setIndex, poolIndex int
	queued              time.Time
	scanMode            madmin.HealScanMode
}

// mrfState sncapsulates all the information
// related to the global background MRF.
type mrfState struct {
	opCh chan partialOperation
}

			tracker.bucketDone(bucket)
			healingLogIf(ctx, tracker.update(ctx))
		}
	}

	tracker.setObject("")
	tracker.setBucket("")

	return retErr
}

func healBucket(bucket string, scan madmin.HealScanMode) error {
	// Get background heal sequence to send elements to heal
	bgSeq, ok := globalBackgroundHealState.getHealSequenceByToken(bgHealingUUID)
	if ok {

	Healing() *healingTracker
	DiskInfo(ctx context.Context, opts DiskInfoOptions) (info DiskInfo, err error)
	NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode, shouldSleep func() bool) (dataUsageCache, error)

	// Volume operations.
	MakeVol(ctx context.Context, volume string) (err error)
	MakeVolBulk(ctx context.Context, volumes ...string) (err error)

		// of any bucket being selected, this is to ensure that
		// meta are always upto date and correct.
		return objAPI.HealObjects(h.ctx, minioMetaBucket, metaPrefix, h.settings, func(bucket, object, versionID string, scanMode madmin.HealScanMode) error {
			if h.isQuitting() {
				return errHealStopSignalled
			}

			err := h.queueHealTask(healSource{
				bucket:    bucket,
				object:    object,
				versionID: versionID,

				duration = time.Second
			}
			time.Sleep(duration)
		}
	}()
}

func getCycleScanMode(currentCycle, bitrotStartCycle uint64, bitrotStartTime time.Time) madmin.HealScanMode {
	bitrotCycle := globalHealConfig.BitrotScanCycle()
	switch bitrotCycle {
	case -1:
		return madmin.HealNormalScan
	case 0:
		return madmin.HealDeepScan
	}

}

func (d *naughtyDisk) SetDiskID(id string) {
	d.disk.SetDiskID(id)
}

func (d *naughtyDisk) NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode, weSleep func() bool) (info dataUsageCache, err error) {
	if err := d.calcError(); err != nil {
		return info, err
	}
	return d.disk.NSScanner(ctx, cache, updates, scanMode, weSleep)
}

	return globalNotificationSys.StorageInfo(z, metrics)
}

func (z *erasureServerPools) NSScanner(ctx context.Context, updates chan<- DataUsageInfo, wantCycle uint32, healScanMode madmin.HealScanMode) error {
	// Updates must be closed before we return.
	defer xioutil.SafeClose(updates)

	ctx, cancel := context.WithCancel(ctx)
	defer cancel()

	var wg sync.WaitGroup
	var mu sync.Mutex

//     a not-found error or a hash-mismatch error.
func disksWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetadata []FileInfo,
	errs []error, latestMeta FileInfo, bucket, object string,
	scanMode madmin.HealScanMode) ([]StorageAPI, []error, time.Time,
) {
	availableDisks := make([]StorageAPI, len(onlineDisks))
	dataErrs := make([]error, len(onlineDisks))

	inconsistent := 0
	for i, meta := range partsMetadata {

		t.Fatalf("Expected versions 1, got %d", fileInfoPreHeal.NumVersions)
	}

	if err = objLayer.HealObjects(ctx, bucket, "", madmin.HealOpts{Remove: true},
		func(bucket, object, vid string, scanMode madmin.HealScanMode) error {
			_, err := objLayer.HealObject(ctx, bucket, object, vid, madmin.HealOpts{ScanMode: scanMode, Remove: true})
			return err
		}); err != nil {
		t.Fatal(err)
	}